patch to allow custom libgcj.spec flags at configure-time

[Adam Megacz]

Bryce McKinlay <bryce@waitaki.otago.ac.nz> writes:
> Hmm. Is --with-lib-spec really useful? If someone needs something here 
> wouldn't it be better for them to fix configure.host or whatever for 
> their target?

Good point. I guess I was struck by feeping creaturism; the set of
default links should be fixed for any combination of platform and
libgcj-version.

How about I commit with --with-spec (instead of --with-jc1-spec) and
drop --with-lib-spec?

  - a